Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Chuaychoo, Pluem, AND Proysurin, Natthapong. " Feasibility of Additional Wastewater Treatment Plants for Water Quality Improvement at Nong Han Lake, Sakon Nakhon, Thailand" International Journal of Biosciences and Biotechnology [Online], Volume 1 Number 1 (27 February 2023)